Journal of the Korean Chemical Society (대한화학회지)

Korean Chemical Society (대한화학회)
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A Study for the Relation Between Selenoproteins and Korean Rectal Cancer Using Deuterium Collision Gas HPLC-ICP/MS

HPLC와 중수소 충돌기체 ICP/MS를 이용하여 분석한 셀레노단백질과 한국인 직장암과의 상관관계 연구

  • Lee, Seo Young (Department of Chemistry Education, Korea National University of Education) ;
  • Pak, Yong-Nam (Department of Chemistry Education, Korea National University of Education)
  • 이서영 (한국교원대학교 화학교육과) ;
  • 박용남 (한국교원대학교 화학교육과)
  • Received : 2019.08.29
  • Accepted : 2019.10.30
  • Published : 2019.12.20
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Abstract

Selenoproteins,in Korean blood serum, GPx, SelP, and SeAlb were separated and determined with the use of HPLC-ICP/MS. Deuterium was used as a collision gas and affinity column with ammonium formate was used as an eluting solvent for the accurate quantitation of selenoproteins in human blood serum. Certified reference material BCR 639 (133±12 ng g-1) was tested for the accuracy and the result was satisfactory 130±6 ng g-1. Blood serum for the rectal cancer and controlled groups were collected and analyzed to give 84±27 ng g-1, and 119±28 ng g-1, respectively. The difference was statistically obvious when t-test was performed (tcal 4.93 > t95% 2.04). The decrease for cancer group was more obvious for female and aged group. The distributions of three selenoproteins were similar with each other, which means rectal cancer group did not show any specificity for any selenoproteins. As cancer developed, GPx showed a slight decrease but not obvious while the total concentration was increasing particularly at the second stage of cancer.

본 연구에서는 중수소를 충돌기체로 사용한 ICP-MS와 ammonium formate를 용리액으로 사용한 친화 크로마토그래피를 이용하여 한국인의 혈청에서의 셀레노단백질 GPx, SelP 및 SeAlb을 분리하고 후 칼럼 동위원소 희석법으로 정확히 정량하였다. 인증기준물질인 BCR 639 (133±12 ng g-1)에 대하여 측정한 셀레늄 총량값은 130±6 ng g-1으로 정확한 결과를 보여주었다. 이 방법을 적용하여 한국인의 직장암 그룹 25명과 통제군 30명의 혈청 속 셀레노단백질을 분석한 결과 셀레늄 총량에 대하여 직장암 그룹이 84±27 ng g-1, 통제군이 119±28 ng g-1으로 직장암 그룹이 통제군 보다 95% 신뢰수준에서 통계적으로 더 작은 결과를 보여 주었다. 즉 t 계산값은 4.93으로 95% 신뢰수준의 2.04보다 높았다. 이러한 경향은 남성보다 여성에서, 60대 이상의 고 연령층일 수록 더욱 뚜렷하였다. 각 셀레노단백질의 분포를 조사한 결과, 두 그룹은 서로 비슷하였고 각 셀레노단백질과 직장암에 따른 특별한 경향성은 보이지 않았다. 또한 직장암 병기가 진행됨에 따라 셀레노단백질 중 GPx의 농도가 약간 감소하는 경향이 있었고, 셀레늄 총량의 경우 2기에서 약간 증가하는 특징을 보였다.

Keywords

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